Genetic Variant OCLN:p.Arg335Gln (chr5-69534806-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001205254.2(OCLN):c.1004G>A(p.Arg335Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0014 ( 0 hom., cov: 18)

Exomes 𝑓: 0.00016 ( 1 hom. )

Failed GnomAD Quality Control

Consequence

OCLN
NM_001205254.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.822

Publications

3 publications found

Variant links:

Genes affected

OCLN (HGNC:8104): (occludin) This gene encodes an integral membrane protein that is required for cytokine-induced regulation of the tight junction paracellular permeability barrier. Mutations in this gene are thought to be a cause of band-like calcification with simplified gyration and polymicrogyria (BLC-PMG), an autosomal recessive neurologic disorder that is also known as pseudo-TORCH syndrome. Alternative splicing results in multiple transcript variants. A related pseudogene is present 1.5 Mb downstream on the q arm of chromosome 5. [provided by RefSeq, Apr 2011]

OCLN Gene-Disease associations (from GenCC):

pseudo-TORCH syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
pseudo-TORCH syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

OCLN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0047424734).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OCLN	NM_001205254.2 link	c.1004G>A	p.Arg335Gln	missense_variant	Exon 5 of 9	ENST00000396442.7	NP_001192183.1	Q16625-1A8K3T2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OCLN	ENST00000396442.7 link	c.1004G>A	p.Arg335Gln	missense_variant	Exon 5 of 9	1	NM_001205254.2	ENSP00000379719.2		Q16625-1

Frequencies

GnomAD3 genomes

AF:

0.00134

AC:

165

AN:

123338

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00583

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000552

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00357

Gnomad NFE

AF:

0.0000485

Gnomad OTH

AF:

0.000600

GnomAD2 exomes

AF:

0.000263

AC:

AN:

239548

AF XY:

0.000230

show subpopulations

Gnomad AFR exome

AF:

0.00456

Gnomad AMR exome

AF:

0.0000896

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000160

AC:

199

AN:

1246484

Hom.:

Cov.:

AF XY:

0.000126

AC XY:

AN XY:

628184

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00652

AC:

149

AN:

22862

American (AMR)

AF:

0.000279

AC:

AN:

43004

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23788

East Asian (EAS)

AF:

0.0000258

AC:

AN:

38834

South Asian (SAS)

AF:

0.0000124

AC:

AN:

80660

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52156

Middle Eastern (MID)

AF:

0.000426

AC:

AN:

4700

European-Non Finnish (NFE)

AF:

0.0000162

AC:

AN:

928100

Other (OTH)

AF:

0.000363

AC:

AN:

52380

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.300

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00135

AC:

167

AN:

123410

Hom.:

Cov.:

AF XY:

0.00116

AC XY:

AN XY:

59284

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00588

AC:

155

AN:

26342

American (AMR)

AF:

0.000552

AC:

AN:

12684

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3146

East Asian (EAS)

AF:

0.00

AC:

AN:

4556

South Asian (SAS)

AF:

0.00

AC:

AN:

3676

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8370

Middle Eastern (MID)

AF:

0.00385

AC:

AN:

260

European-Non Finnish (NFE)

AF:

0.0000485

AC:

AN:

61852

Other (OTH)

AF:

0.000592

AC:

AN:

1690

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.290

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00270

Hom.:

ExAC

AF:

0.000250

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 17, 2015

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.088

T;T;.

Eigen

Benign

-0.78

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.060

LIST_S2

Benign

0.75

.;T;T

M_CAP

Benign

0.015

MetaRNN

Benign

0.0047

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;L;.

PhyloP100

0.82

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.20

N;N;N

REVEL

Benign

0.042

Sift

Benign

0.32

T;T;T

Sift4G

Benign

0.78

T;T;T

Polyphen

0.0010

B;B;.

Vest4

0.13

MVP

0.70

MPC

2.1

ClinPred

0.012

GERP RS

2.1

Varity_R

0.031

gMVP

0.36

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over